Zobrazeno 1 - 10
of 219
pro vyhledávání: '"J. F. Barlow"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2315-2330 (2023)
Fluxes of nitrogen oxides (NOx=NO+NO2) and carbon dioxide (CO2) were measured using eddy covariance at the British Telecommunications (BT) Tower in central London during the coronavirus pandemic. Comparing fluxes to those measured in 2017 prior to th
Externí odkaz:
https://doaj.org/article/0e11a47c64c245218644c85b490d9189
Autor:
C. Helfter, A. H. Tremper, C. H. Halios, S. Kotthaus, A. Bjorkegren, C. S. B. Grimmond, J. F. Barlow, E. Nemitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 10543-10557 (2016)
We report on more than 3 years of measurements of fluxes of methane (CH4), carbon monoxide (CO) and carbon dioxide (CO2) taken by eddy-covariance in central London, UK. Mean annual emissions of CO2 in the period 2012–2014 (39.1 ± 2.4 ktons km
Externí odkaz:
https://doaj.org/article/3bc676e2b85f429a8114d5462a633560
Autor:
S. Visser, J. G. Slowik, M. Furger, P. Zotter, N. Bukowiecki, F. Canonaco, U. Flechsig, K. Appel, D. C. Green, A. H. Tremper, D. E. Young, P. I. Williams, J. D. Allan, H. Coe, L. R. Williams, C. Mohr, L. Xu, N. L. Ng, E. Nemitz, J. F. Barlow, C. H. Halios, Z. L. Fleming, U. Baltensperger, A. S. H. Prévôt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 19, Pp 11291-11309 (2015)
Trace element measurements in PM10–2.5, PM2.5–1.0 and PM1.0–0.3 aerosol were performed with 2 h time resolution at kerbside, urban background and rural sites during the ClearfLo winter 2012 campaign in London. The environment-dependent variabil
Externí odkaz:
https://doaj.org/article/abbb93974f774890ab071bde2798de70
Autor:
L. R. Crilley, W. J. Bloss, J. Yin, D. C. S. Beddows, R. M. Harrison, J. D. Allan, D. E. Young, M. Flynn, P. Williams, P. Zotter, A. S. H. Prevot, M. R. Heal, J. F. Barlow, C. H. Halios, J. D. Lee, S. Szidat, C. Mohr
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 6, Pp 3149-3171 (2015)
Determining the contribution of wood smoke to air pollution in large cities such as London is becoming increasingly important due to the changing nature of domestic heating in urban areas. During winter, biomass burning emissions have been identified
Externí odkaz:
https://doaj.org/article/8e3ccad1afc543b1b98e77962e9b5433
Autor:
S. Visser, J. G. Slowik, M. Furger, P. Zotter, N. Bukowiecki, R. Dressler, U. Flechsig, K. Appel, D. C. Green, A. H. Tremper, D. E. Young, P. I. Williams, J. D. Allan, S. C. Herndon, L. R. Williams, C. Mohr, L. Xu, N. L. Ng, A. Detournay, J. F. Barlow, C. H. Halios, Z. L. Fleming, U. Baltensperger, A. S. H. Prévôt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 5, Pp 2367-2386 (2015)
Ambient concentrations of trace elements with 2 h time resolution were measured in PM10–2.5, PM2.5–1.0 and PM1.0–0.3 size ranges at kerbside, urban background and rural sites in London during winter 2012. Samples were collected using rotating d
Externí odkaz:
https://doaj.org/article/47f3c37c6a5b4a268c93016eb703f7ef
Autor:
R. M. Harrison, M. Dall'Osto, D. C. S. Beddows, A. J. Thorpe, W. J. Bloss, J. D. Allan, H. Coe, J. R. Dorsey, M. Gallagher, C. Martin, J. Whitehead, P. I. Williams, R. L. Jones, J. M. Langridge, A. K. Benton, S. M. Ball, B. Langford, C. N. Hewitt, B. Davison, D. Martin, K. F. Petersson, S. J. Henshaw, I. R. White, D. E. Shallcross, J. F. Barlow, T. Dunbar, F. Davies, E. Nemitz, G. J. Phillips, C. Helfter, C. F. Di Marco, S. Smith
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 6, Pp 3065-3114 (2012)
The REgents PARk and Tower Environmental Experiment (REPARTEE) comprised two campaigns in London in October 2006 and October/November 2007. The experiment design involved measurements at a heavily trafficked roadside site, two urban background sites
Externí odkaz:
https://doaj.org/article/b180509e2a32456198483d090a2d5b41
Autor:
M. Dall'Osto, A. Thorpe, D. C. S. Beddows, R. M. Harrison, J. F. Barlow, T. Dunbar, P. I. Williams, H. Coe
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 13, Pp 6623-6637 (2011)
Nanoparticles emitted from road traffic are the largest source of respiratory exposure for the general public living in urban areas. It has been suggested that adverse health effects of airborne particles may scale with airborne particle number, whic
Externí odkaz:
https://doaj.org/article/a8f973ba9f0e4c8ea385dee6e83c52a6
Autor:
C. Helfter, D. Famulari, G. J. Phillips, J. F. Barlow, C. R. Wood, C. S. B. Grimmond, E. Nemitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 5, Pp 1913-1928 (2011)
Eddy-covariance measurements of carbon dioxide fluxes were taken continuously between October 2006 and May 2008 at 190 m height in central London (UK) to quantify emissions and study their controls. Inner London, with a population of 8.2 million (~50
Externí odkaz:
https://doaj.org/article/3e5e915e10f84bbab94c8687e30904b0
Autor:
J. F. Barlow, T. M. Dunbar, E. G. Nemitz, C. R. Wood, M. W. Gallagher, F. Davies, E. O'Connor, R. M. Harrison
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 5, Pp 2111-2125 (2011)
Urban boundary layers (UBLs) can be highly complex due to the heterogeneous roughness and heating of the surface, particularly at night. Due to a general lack of observations, it is not clear whether canonical models of boundary layer mixing are appr
Externí odkaz:
https://doaj.org/article/9aac385c0699463fb41ca9c286c1d222
Autor:
D. Martin, K. F. Petersson, I. R. White, S. J. Henshaw, G. Nickless, A. Lovelock, J. F. Barlow, T. Dunbar, C. R. Wood, D. E. Shallcross
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 1, Pp 227-239 (2011)
There have been relatively few tracer experiments carried out that have looked at vertical plume spread in urban areas. In this paper we present results from two tracer (cyclic perfluorocarbon) experiments carried out in 2006 and 2007 in central Lond
Externí odkaz:
https://doaj.org/article/4196d34f3aaf46febee5efac0fae4fab